Container and cover



17} 1935- J. M. MANcuso ET AL. 2,024,532

CONTAINER AND COVER Filed July 27, 1934 \\\L WWW Invenlor Patented Dec.17, 1935 PATENT OFFICE 2,024,532 CONTAINER AND COVER James M. Mancusoand Richard E. Blagoue, Hibbing, Minn.

Application July 27, 1934, Serial No. 737,280

1 Claim.

This invention relates to a container and cover, the general object ofthe invention being to provide means whereby the cover or closure isheld. in an air-tight closed position by atmospheric pressure thereon,when a partial vacuum has been produced in the container by heating thecontents thereof and then permitting the contents to cool.

This invention also consists in certain other features of constructionand in the combination and arrangement of several parts, to behereinafter fully described, illustrated in the accompanying drawing andspecifically pointed out in the appended claim.

In describing the invention in detail, reference.

will be had to the accompanying drawing wherein like characters denotelike or corresponding parts throughout the several views, and in which:

Fig. 1 is a longitudinal sectional view through the invention.

Fig. 2 is an edge view of the cover or closure member.

In this drawing, the numeral. I indicates a jar preferably formed ofglass and having its upper part thickened internally as shown at2 toprovide a downwardly tapering neck or mouth 3. The cover or closuremember 4 is also preferably formed of glass and has its peripherysloping downwardly and inwardly and the central portion is formed with aknob 5. A gasket 6 is placed between the mount 3 and the periphery ofthe closure member and has an upwardly extending tab 1 formed thereonand the lower part of a side portion of the closure member is formedwith a vent 8 which is formed by a hole passing from the lower face ofthe closure member upwardly and outwardly to a portion of the side wallthereof.

As the cover or closure member is being put in place, it of coursedisplaces some of the air from the contents of the jar or container andby pulling upwardly on the tab 1 to make the gasket thin at the pointwhere the tab is connected thereto, some of the air will escape throughthe vent 8. When thecover is in place, the tab is released and thegasket takes its normal position sealing the vent. Pressure on the coveror closure member acts to compress the gasket which is preferably formedof rubber and when the pressure is removed from the cover 7 cover memberin position.

or closure member, the compressed gasket forces the cover or closuremember upwardly, thus creating a rarified air space in the jar above thecontents and thus the atmospheric pressure is greater than that of thepressure in the jar and this acts to firmly hold the closure or Toremove the cover or closure member, the tab is pulled upwardly so as tomake the parts to which the tab is connected thin which will permit airto enter the jar through the vent and then the cover can readily beremoved. By heating the contents and applying the cover while thecontents is still hot, the contraction of air when contents and. air inthe jar cool, will cause a partial vacuum in the air space of the jarwhich as before stated causes atmospheric pressure to hold the It is tobe understood that changes may be 7 made in the construction and in thecombination and arrangement of the several parts, provided that suchchanges fall within the scope of the appended claim.

We claim:

A device of the class described comprising a jar having a wide mouth,the internal walls of which slope downwardly and inwardly, a covermember having an upstanding peripheral flange, the exterior wall ofwhich slopes downwardly and inwardly, said cover having a vent holetherein which extends from a point on the lower face of the coveradjacent the periphery thereof, upwardly and outwardly through a portionof the exterior wall of the flange, said cover when placed in the mouthhaving the upper edges of the flange spaced downwardly from the upperedge of the mouth, and a gasket fitting in the space between the flangeand the mouth and having a portion covering the upper end of the venthole, and a tab extending upwardly from said portion of the gasket to apoint above the upper edge of the mouth, whereby an upward pull on thetab will render that part of the gasket which covers the upper end ofthe vent hole thin to permit air to enter the vent hole and thus enterthe jar.

JAMES M. MANCUSO. RICHARD E. BLAGOUE.

